Repeatabilityrepeating

Repeatabilityrepeating is not an established term in scientific literature; it is a coined phrase that may appear in informal discussions to stress the connection between the ability to obtain the same result when an experiment is repeated and the act of repeating the experiment itself. In this sense, the term blends two related ideas: repeatability, as a measure of precision, and repeating as the procedural act of performing measurements again.

Repeatability refers to the closeness of agreement between successive measurements carried out under unchanged conditions. It is a short-term measure of precision typically assessed within a single setup, using the same operator, instrument, and environment. Repeating, in ordinary language, is simply doing the same measurement again. The overlap of these concepts in the coined term highlights how repeated trials under consistent conditions should produce concordant results within the bounds of measurement uncertainty.

In practice, repeatability is contrasted with reproducibility, which assesses variability when conditions change—such as different operators, instruments, or laboratories. The idea behind repeatabilityrepeating is that, when experiments are repeated, results should converge, thereby supporting reliability. However, because the term is nonstandard, it can cause confusion and is generally discouraged in formal reporting in favor of using repeatability and related terms separately.

Examples include a balance in a single lab yielding nearly identical weights on repeated trials, or software tests producing the same outcome across multiple runs. For clarity, use standard terminology: repeatability for short-term precision and repetition as the action of performing tests again.